Light and thin hinge structure

Abstract

Disclosed in the present invention is a light and thin hinge structure, comprising a first leaf, a second leaf and a folding mechanism, wherein a mounting cavity is provided on the inner side of the second leaf; the folding mechanism comprises a first connecting rod, a second connecting rod, third connecting rods and a transmission guide structure; one end of the first connecting rod and one end of the second connecting rod are respectively hinged to first hinge portions and a second hinge portion which are distributed to the front and rear in the mounting cavity; the axes of the first hinge portions and the second hinge portion in the mounting cavity are located on the same horizontal plane; one end of each third connecting rod is hinged to the other end of the first connecting rod, and the other end of each third connecting rod is hinged to the first leaf; and the other end of the second connecting rod is hinged to the third connecting rods, and the other end of the second connecting rod is in transmission connection with the inner side of the first leaf by means of the transmission guide structure. The hinge structure is simplified, and the external dimensions and weight are reduced, thereby further lowering the manufacturing cost.

Description

A thin and light hinge structure Technical Field

[0001] This invention relates to the technical field of hinges, and more particularly to a thin and light hinge structure. Background Technology

[0002] Hinges are mainly used to connect door panels and door frames, allowing the door panels to move and the door to be opened or closed. For example, the adjustable door hinge with an improved adjustment structure disclosed in Chinese Patent Publication No. CN103938967A has the following drawbacks: complex structure, excessively large and heavy dimensions, and high manufacturing cost. In addition, deep grooves need to be cut on the side of the door frame and the side of the door panel during installation, making the installation process cumbersome for workers. Therefore, the above structure can no longer meet people's growing needs, so there is an urgent need for improvement. Summary of the Invention

[0003] The purpose of this invention is to design a thin and light hinge structure to overcome the shortcomings of the above-mentioned technologies.

[0004] The present invention provides a thin and light hinge structure, comprising:

[0005] The first piece of the body, and

[0006] The second piece has an mounting cavity on its inner side;

[0007] A folding mechanism includes a first link, a second link, a third link, and a transmission guide structure. One end of the first link and one end of the second link are respectively hinged to a first hinge portion and a second hinge portion distributed front to back within the mounting cavity. One end of the third link is hinged to the other end of the first link, and the other end of the third link is hinged to a first piece. The other end of the second link is hinged to the third link, and the other end of the second link is connected to the inner side of the first piece via the transmission guide structure.

[0008] In this design, the axes of the first and second hinges within the mounting cavity are located on the same horizontal plane. The first and second plates are connected by a folding mechanism, allowing them to be in an unfolded or closed state. In the unfolded state, one end of the first and second connecting rods is placed within the mounting cavity, with the hinge axes at both ends of the first and second connecting rods serving as the four endpoints of a quadrilateral. In the closed state, the first, second, and third connecting rods, along with the transmission guide structure, lie within the mounting cavity, ensuring that the hinge axes at both ends of the first and second connecting rods, the hinge axes at both ends of the second connecting rod, the hinge axis of the first plate, and the hinge axis of the second plate are all located on the same horizontal plane.

[0009] According to the above-described thin hinge structure, the transmission guide structure includes a first gear, an odd number of second gears, and a third gear. The first gear is fixedly disposed on the inner side of the first plate and hinged to the other end of the third connecting rod. The second gear is hinged to the middle of the third connecting rod. The third gear is fixedly disposed on the other end of the second connecting rod. The other end of the second connecting rod is hinged to the third connecting rod through the third gear. The first gear and the third gear mesh with the second gear respectively.

[0010] According to the above-described thin hinge structure, the first gear, the second gear, and the third gear are arranged along the length of the third connecting rod, and are arranged in a tilted "I" shape or a horizontal "I" shape. Alternatively, the axes of the first gear and the second gear are offset from each other, and the axes of the second gear and the third gear are on the same horizontal plane. Or, the axes of the first gear and the second gear are on the same horizontal plane, and the axes of the second gear and the third gear are offset. Alternatively, the axes of the first gear and the third gear are offset from the axis of the second gear, and the axes of the first gear and the third gear are on the same horizontal plane.

[0011] According to the above-described thin hinge structure, the first connecting rod includes a first straight segment and a second straight segment disposed at one end of the first straight segment. The included angle between the first straight segment and the second straight segment is an obtuse angle. The end of the first straight segment is hinged to a first hinge portion in the mounting cavity, and the end of the second straight segment is hinged to a third connecting rod via a third gear.

[0012] According to the above-described thin hinge structure, the length of the first straight segment is greater than the length of the second straight segment.

[0013] According to the above-described thin hinge structure, the first link is provided with a first clearance notch facing the side of the second link and along its length.

[0014] According to the above-described thin hinge structure, the second connecting rod includes a first straight section and a second straight section disposed at one end of the first straight section. The included angle between the first straight section and the second straight section is an obtuse angle. The end of the first straight section is hinged to the second hinge portion of the mounting cavity, and the end of the second straight section is connected to the third connecting rod via the third gear.

[0015] According to the above-described thin hinge structure, the first hinge portion in the mounting cavity is configured as at least one and is located behind the second hinge portion, and the second hinge portion is configured as at least one and is located at the opening of the mounting cavity (210), and the end of the first straight segment of the first connecting rod is hinged to the first hinge portion.

[0016] According to the above-described thin hinge structure, the number of the first gear, the second gear, the third gear, and the third link is set to at least two, and they are all distributed at intervals along the length of the hinge structure, such that at least two first gears, at least two second gears, and at least two third gears are respectively coaxially arranged, and at least two third links are arranged opposite to each other and parallel to each other, and one end of each link is respectively hinged to the two inner walls of the opening of the first clearance notch of the first link. The first gear, the second gear, and the third gear are hinged to the inner side of each third link.

[0017] According to the above-described thin hinge structure, at least two second gears are connected by a connecting shaft, and the second connecting rod is provided with a second clearance notch for avoiding the connecting shaft; the other ends of at least two third connecting rods are respectively hinged to hinge plates, each hinge plate is fixedly disposed to the inner side of the first piece, and the hinge plates and the first gears are close to one side edge of the second piece in the length direction.

[0018] The thin and light hinge structure designed in this invention has the following advantages:

[0019] 1. The hinge structure of the present invention is simplified, and the external size and weight are reduced, further reducing manufacturing costs.

[0020] 2. The first piece is a thin piece, and the second piece has a convex back due to the installation cavity. Therefore, during installation, only a shallow groove needs to be made in the mounting part of the second piece, which simplifies the installation method.

[0021] 3. The folding mechanism is equipped with a gear transmission component, which makes the hinge opening and closing more stable and smooth, thereby improving the performance and opening and closing experience. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the unfolded state of the hinge structure (I);

[0023] Figure 2 is a schematic diagram of the unfolded state of the hinge structure (II);

[0024] Figure 3 is a schematic diagram of the unfolded state of the hinge structure (Part III);

[0025] Figure 4 is a schematic diagram of the unfolded state of the hinge structure (IV);

[0026] Figure 5 is a schematic diagram of the hinge structure in its unfolded state (V);

[0027] Figure 6 is a schematic diagram of the unfolded state of the hinge structure (VI);

[0028] Figure 7 is a schematic diagram of the unfolded state of the hinge structure (VII);

[0029] Figure 8 is a schematic diagram of the unfolded state of the hinge structure (VIII);

[0030] Figure 9 is a schematic diagram of the closed state structure of the hinge;

[0031] Figure 10 is a schematic diagram of the structure combining the second piece with the folding mechanism;

[0032] Figure 11 is a structural schematic diagram of the first link;

[0033] Figure 12 is a schematic diagram of the second link (I);

[0034] Figure 13 is a schematic diagram of the second link (II);

[0035] Figure 14 is a structural schematic diagram of three gear arrangement methods (I);

[0036] Figure 15 is a structural schematic diagram of three gear arrangement methods (II);

[0037] Figure 16 is a structural schematic diagram of three gear arrangement methods (III);

[0038] Figure 17 is a structural schematic diagram of three gear arrangement methods (IV);

[0039] Figure 18 is a structural schematic diagram of three gear arrangement methods (V).

[0040] In the diagram: 1. First sheet; 10. Folding mechanism;

[0041] 2. Second body; 21. Mounting part; 210. Mounting cavity; 211. First hinge part; 212. Second hinge part; 22. Connecting ear;

[0042] 3. First connecting rod; 30. First clearance notch; 31. First straight segment; 32. Second straight segment;

[0043] 4. Second connecting rod; 40. Second clearance notch; 41. First straight section; 42. Second straight section;

[0044] 5. Third link;

[0045] 6. Transmission-type guide structure; 61. First gear; 62. Second gear; 63. Third gear; 64. Connecting shaft; 65. Hinge plate; Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0047] Example:

[0048] As shown in Figures 1-13, the thin hinge structure described in this embodiment includes a first sheet 1, a second sheet 2, and a folding mechanism 10. The two ends of the folding mechanism 10 are rotatably connected to the first sheet 1 and the second sheet 2, respectively, so that the first sheet 1 and the second sheet 2 can be unfolded and closed under the action of the folding mechanism 10.

[0049] The second piece 2 has an inner cavity 210. The second piece 2 is composed of a mounting part 21 and two connecting ears 22. The mounting cavity 210 is located inside the mounting part 21, and the two connecting ears 22 are located at opposite ends of the mounting part 21. The inner side of each connecting ear 22 is flush with the inner side of the mounting part 21. Therefore, the connecting ears 22 and the mounting part 21 are combined to form an integral structure of the second piece 2, or the connecting ears 22 are installed in the end mounting groove of the mounting part 21 by means of mounting bolts or welding.

[0050] The folding mechanism 10 includes a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, and a transmission guide structure 6. The third connecting rod 5 is generally a straight connecting rod, but is not limited to this. One end of the first connecting rod 3 and one end of the second connecting rod 4 are respectively hinged to a first hinge portion 211 and a second hinge portion 212 distributed front-to-back within the mounting cavity 210. The axes of the first hinge portion 211 and the second hinge portion 212 within the mounting cavity 210 are located on the same horizontal plane. One end of the third connecting rod 5 is hinged to the other end of the first connecting rod 3, and the other end of the third connecting rod 5 is hinged to the first connecting rod 3. A single piece 1 is hinged; the transmission guide structure 6 includes a first gear 61, an odd number of second gears 62, and a third gear 63. The first gear 61 is fixedly disposed on the inner side of the first piece 1 and hinged to the other end of the third connecting rod 5. The second gears 62 are hinged to the middle of the third connecting rod 5. The third gear 63 is fixedly disposed on the other end of the second connecting rod 4, and the other end of the second connecting rod 4 is hinged to the third connecting rod 5 through the third gear 63. The first gear 61 and the third gear 63 mesh with the second gears 62 respectively. The above-mentioned gear transmission assembly can guide the movement of the first piece 1 and the second piece 2 when they are relatively unfolded or closed, so that the first piece 1 or the second piece 2 can perform circular motion to achieve the effect of hinge operation. At the same time, the number of second gears 62 can be set to one, three, five, or seven, etc., but this number is not limited to these. When the number of second gears 62 is three, five, or seven, they are arranged along the length direction of the third connecting rod 5.

[0051] The first piece 1 and the second piece 2 are in an unfolded or closed state through a folding mechanism 10; when the first piece 1 or the second piece 2 is unfolded or closed, the folding mechanism 10 is also unfolded or closed, and the first piece 1 or the second piece 2 makes a circular motion under the action of the transmission guide structure 6.

[0052] In the unfolded state, the angle between the first piece 1 and the second piece 2 is greater than 0° and less than or equal to 180°. In the unfolded state at 180°, the inner side of the first piece 1 is flush with the inner side of the second piece 2, and the third link 5 is in a horizontal state. Alternatively, in the unfolded state at 90°, the third link 5 is in a horizontal state, and the inner side of the first piece 1 is perpendicular to the third link 5. The first link 3 and the second link 4 are in a vertical state. One end of the first link 3 and the second link 4 are placed in the mounting cavity 210. The hinge axis at both ends of the first link 3 and the hinge axis at both ends of the second link 4 serve as the four endpoints of a parallelogram. During the unfolding process, the first link 3, the second link 4, and the third link 5 also unfold. At the same time, the first gear 61 and the second gear 62 mesh with each other to guide the transmission, thereby restricting the first piece 1 or the second piece 2 from making circular motions and unfolding.

[0053] In the closed state, the included angle between the first piece 1 and the second piece 2 is 0°, and their inner sides are in contact with each other. The first connecting rod 3, the second connecting rod 4, the third connecting rod 5, and the transmission guide structure 6 are all lying in the mounting cavity 210 so that the axis of the hinge at both ends of the first connecting rod 3 and the axis of the hinge at both ends of the second connecting rod 4 are on the same horizontal plane. During the closing process, the first connecting rod 3, the second connecting rod 4, and the third connecting rod 5 also close. At the same time, the first gear 61 and the second gear 62 mesh with the second gear 62 to guide the transmission, thereby restricting the first piece 1 or the second piece 2 from making circular motion and closing.

[0054] Preferably, the first gear 61, the second gear 62, and the third gear 63 are arranged along the length of the third connecting rod 5, and are arranged in an inclined "I" shape or a horizontal "I" shape. Alternatively, the first gear 61, the second gear 62, and the third gear 63 can be arranged in other ways, such as the axis of the first gear 61 being offset from the axis of the second gear 62, and the axis of the second gear 62 being on the same horizontal plane, or the axis of the first gear 61 being on the same horizontal plane. In the above configuration, the axis of the second gear 62 is misaligned with the axis of the third gear 63, or the axes of the first gear 61 and the third gear 63 are respectively misaligned with the axis of the second gear 62. The axes of the first gear 61 and the third gear 63 are located on the same horizontal plane. However, when other arrangements are adopted or when they are arranged in an inclined "I" shape, the depth of the mounting groove needs to be increased so that the first connecting rod 3, the second connecting rod 4, the third connecting rod 5 and the transmission guide structure 6 can be accommodated in the closed state. Please refer to Figures 14-18.

[0055] Preferably, the first connecting rod 3 includes a first straight segment 31 and a second straight segment 32 disposed at one end of the first straight segment 31. The included angle between the first straight segment 31 and the second straight segment 32 is an obtuse angle, but it is not limited to this. The included angle between the first straight segment 31 and the second straight segment 32 may also be 180° to make the first connecting rod a straight connecting rod. The end of the first straight segment 31 is hinged to the first hinge portion 211 in the mounting cavity 210, and the end of the second straight segment 32 is hinged to the third connecting rod 5 through the third gear 63. The length of the first straight segment 31 is greater than the length of the second straight segment 32. This structural arrangement can make the hinge structure more reasonable and reliable, and improve the performance.

[0056] In this embodiment, the first connecting rod 3 is provided with a first clearance notch 30 facing the second connecting rod 4 and along its length direction; wherein, the first clearance notch 30 allows the second connecting rod 4 to be nearly horizontal when fully extended, or allows the second connecting rod 4 to lie in the mounting cavity 210 when fully closed, thereby providing a way to accommodate the second connecting rod 4 and further reduce the external dimensions after the hinge is closed.

[0057] In this embodiment, the second connecting rod 4 includes a first straight section 41 and a second straight section 42 disposed at one end of the first straight section 41. The included angle between the first straight section 41 and the second straight section 42 is an obtuse angle, but it is not limited to this; the included angle between the first straight section 41 and the second straight section 42 can also be 180° to make the second connecting rod a straight connecting rod. The end of the first straight section 41 is hinged to the second hinge portion 212 of the mounting cavity 210, and the end of the second straight section 42 is connected to the third connecting rod 5 through the third gear 63. This structural arrangement makes the hinge structure more reasonable and reliable, improving its performance.

[0058] In this embodiment, the first hinge portion 211 in the mounting cavity 210 is configured as two and is located behind the second hinge portion 212. The second hinge portion 212 is configured as one and is located at the opening of the mounting cavity 210. The opposite sides of the end of the first straight segment 31 of the first connecting rod 3 are respectively hinged to the two first hinge portions 211. In addition, the number of the first gear 61, the second gear 62, the third gear 63 and the third connecting rod 5 is set to at least two, and they are all distributed at intervals along the length direction of the hinge structure, so that at least two first gears 61, at least two second gears 62 and at least two third gears 63 are respectively coaxially arranged, and at least two third connecting rods 5 are arranged opposite and parallel, and one end of each third connecting rod 5 is respectively hinged to the two inner walls of the opening of the first clearance notch 30 of the first connecting rod 3. The first gear 61, the second gear 62 and the third gear 63 are hinged to the inner side of each third connecting rod 5. The first gear 61, the second gear 62, the third gear 63 and the third connecting rod 5 are preferably two in number, but more can be used. This structure makes the structure more compact, which improves the strength of the hinge structure and makes the hinge more stable and reliable during operation, thus improving its performance.

[0059] Furthermore, at least two of the second gears 62 are connected by a connecting shaft 64. A second clearance notch 40 is provided on the side of the second connecting rod 4 away from the first connecting rod 3 to avoid the connecting shaft 64. The connecting shaft 64 provides support between the two second gears 62, improving structural stability. The second clearance notch 40 provides clearance space for the connecting shaft 64 when the hinge structure is fully closed, thus contributing to the thinning of the hinge shape.

[0060] At least two third connecting rods 5 are respectively hinged to the other end with hinge plates 65. Each hinge plate 65 is fixedly disposed to the inner side of the second plate 2. The hinge plates 65 and the first gear 61 are both close to one side edge of the first plate 1 in the length direction. The setting of the hinge plates 65 makes the rotation of the third connecting rods 5 more stable and improves the performance of the structure.

[0061] This invention is not limited to the preferred embodiments described above. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. A thin and light hinge structure, characterized in that, include: The first piece (1), and The second piece (2) has an installation cavity (210) on its inner side; Folding mechanism (10), the folding mechanism (10) includes a first link (3), a second link (4), a third link (5) and a transmission guide structure (6). One end of the first link (3) and one end of the second link (4) are respectively hinged to the first hinge part (211) and the second hinge part (212) distributed in the front and back in the mounting cavity (210). One end of the third link (5) is hinged to the other end of the first link (3). The other end of the third link (5) is hinged to the first piece (1). The other end of the second link (4) is hinged to the third link (5). The other end of the second link (4) is connected to the inner side of the first piece (1) through the transmission guide structure (6). The first and second pieces are connected by a folding mechanism to be in an unfolded or closed state. In the unfolded state, one end of the first and second connecting rods is placed in the mounting cavity, and the hinge axis at both ends of the first connecting rod and the hinge axis at both ends of the second connecting rod serve as the four endpoints of a quadrilateral. In the closed state, the first connecting rod, the second connecting rod, the third connecting rod, and the transmission guide structure are all laid in the mounting cavity.

2. The thin and light hinge structure according to claim 1, characterized in that, The transmission guide structure (6) includes a first gear (61), an odd number of second gears (62) and a third gear (63). The first gear (61) is fixedly disposed on the inner side of the first plate (1) and hinged to the other end of the third connecting rod (5). The second gear (62) is hinged to the middle of the third connecting rod (5). The third gear (63) is fixedly disposed on the other end of the second connecting rod (4). The other end of the second connecting rod (4) is hinged to the third connecting rod (5) through the third gear (63). The first gear (61) and the third gear (63) mesh with the second gear (62) respectively.

3. The thin and light hinge structure according to claim 2, characterized in that, The first gear (61), the second gear (62), and the third gear (63) are arranged along the length of the third connecting rod 5, and are arranged in a tilted "I" shape or a horizontal "I" shape, or... The axis of the first gear (61) is offset from the axis of the second gear (62), and the axis of the second gear (62) is on the same horizontal plane as the axis of the third gear (63). The axis of the first gear (61) and the axis of the second gear (62) are on the same horizontal plane, and the axis of the second gear (62) and the axis of the third gear (63) are misaligned, or The shafts of the first gear (61) and the third gear (63) are respectively offset from the shaft of the second gear (62), and the shafts of the first gear (61) and the third gear (63) are located on the same horizontal plane.

4. The thin and light hinge structure according to claim 2, characterized in that, The first connecting rod (3) includes a first straight segment (31) and a second straight segment (32) disposed at one end of the first straight segment (31). The angle between the first straight segment (31) and the second straight segment (32) is an obtuse angle. The end of the first straight segment (31) is hinged to the first hinge part (211) in the mounting cavity (210). The end of the second straight segment (32) is hinged to the third connecting rod (5) through the third gear (63).

5. The thin and light hinge structure according to claim 4, characterized in that, The length of the first straight segment (31) is greater than the length of the second straight segment (32).

6. The thin and light hinge structure according to claim 2, characterized in that, The first link (3) is provided with a first clearance notch (30) facing the second link (4) and along its length.

7. The thin and light hinge structure according to claim 2, characterized in that, The second connecting rod (4) includes a first straight section (41) and a second straight section (42) disposed at one end of the first straight section (41). The angle between the first straight section (41) and the second straight section (42) is an obtuse angle. The end of the first straight section (41) is hinged to the second hinge section (212) of the mounting cavity (210). The end of the second straight section (42) is connected to the third connecting rod (5) through the third gear (63).

8. A thin and light hinge structure according to any one of claims 2-7, characterized in that, The first hinge portion (211) in the mounting cavity (210) is configured as at least one and is located behind the second hinge portion (212). The second hinge portion (212) is configured as at least one and is located at the opening of the mounting cavity (210). The end of the first straight segment (31) of the first connecting rod (3) is hinged to the first hinge portion (211).

9. A thin and light hinge structure according to claim 8, characterized in that, The number of the first gear (61), the second gear (62), the third gear (63) and the third link (5) is set to at least two, and they are all distributed at intervals along the length of the hinge structure, such that at least two first gears (61), at least two second gears (62) and at least two third gears (63) are coaxially arranged, and at least two third links (5) are arranged opposite to each other and parallel to each other, and one end of each link (5) is hinged to the two inner walls of the opening of the first clearance notch (30) of the first link (3), and the first gear (61), the second gear (62) and the third gear (63) are hinged to the inner side of each third link (5).

10. A thin and light hinge structure according to claim 9, characterized in that, At least two of the second gears (62) are connected by a connecting shaft (64), and the second connecting rod (4) is provided with a second clearance notch (40) for avoiding the connecting shaft (64); At least two third links (5) are hinged to the other end of each of them with hinge plates (65). Each hinge plate (65) is fixedly disposed to the inner side of the first plate (1). The hinge plate (65) and the first gear (61) are both close to one side edge of the second plate (2) in the length direction.

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